To the SubMeter product family PowerHouse FTT belong digital AC meters with LON Free Topology network interface (FTT) for building automation and energy management.The SubMeter is used to provide basic power metering and ON/OFF control of a load by a remote control of a relay (switch). A very important objective for this product family is to provide an interoperable device definition that makes it possible for a system integration company to deliver a system where sub meter nodes (devices) from different manufacturers can be integrated with a minimum amount of effort. In addition to the detection of the electrical activity W [kWh], the following physical values are also detected: electrical power (active, reactive and apparent power), rms values of current and voltage, and the PF and the mains frequency with the accuracy class A, (2%) according to DIN EN 50470 -1 and -3. The measured values are transferred to a LON FTT network or to a central control using standard network variables (SNVTs) in accordance with the LONMARK standard. The SubMeter Powerhouse FTT based on the LONMARK functional profile “Single-Phase SubMeter” Type #2161. Depending on the housing type, the SubMeters have a relay output of 10A or 16A @ 250V AC. The SubMeter PowerHouse FTT is available in two housing variations: • DIN rail housing • plug case
The number of applications for LonMark certification is growing rapidly. To make sure your products are on-track for certification, design conformance into them by following the LonMark Interoperability Guidelines v3.4.
The Proficiency Testing Program for Qualified Open Systems Installers, Professionals and Integrators provides a worldwide standard of proficiency for individuals that install, integrate and maintain systems utilizing LonMark certified products.